1 Land contracts or contracts for deed are a security agreement between a seller, called a Vendor, and a buyer, called a Vendee.  The Vendor agrees to sell a property by financing the purchase for the Vendee.
The two DNA strands are held together by interchain hydrogen bonds. H-bonds pair the bases in one chain to the complementary bases in the other chain. (A/T and G/C).
hydrogen bonds between the base pairs hold the two strands of DNA together.   Hydrongen bond. Hydrogen bonds are one of the weakest bonds, and aren't even true  bonding of molecules, but rather a magnetic attraction between  them.